The Spy Blade of the Republic of China: the Password in the Cheongsam

The cheongsam hides a blade, and the knife scares people. In Shanghai in the 1930s, the cheongsam contains a deadly secret, and the knife locks the code of life and death. Yang Fan, a time traveler, is a "knife" of military command; under the iron hoof of the Japanese army, he pierced the iron curtain of the enemy camp and created a bloody dawn. Blood and tenderness intertwined, the blade is invincible, a romantic legend that will never fade.